Rapid-Pi 2.1
Rapid-Pi is an add-on for Microsoft Word (and other word processors) that provides a new, fast way to enter mathematical formulas, equations and expressions into documents. Rapid-Pi's text-based input is a simply faster way to input math.

Kwiktrig 3.0.5

For quick solutions to trigonometry and geometry problems from expert to novice. Even with no math skills, and little to no computer skills YOU can do it! KwikTrig solves for RIGHT and OBLIQUE triangles, BOLT CIRCLES, calculates SINES and COMPOUND SINES. Use decimal degrees, or degrees/minutes/seconds for input/output on all calculations on the above and rounds numbers from 1 to 15 decimal places.